Read it through once

There was no conversation. People do not talk when they are cold, and wretched, and sleepy. We nodded in the saddle, at times, and woke up with a start to find that the procession had disappeared in the gloom. Then there was energy and attention to business until its dusky outlines came in sight again. Occasionally the order was passed in a low voice down the line: “Close up--close up! Bedouins lurk here, every where!” What an exquisite shudder it sent shivering along one's spine!